1 touch installer of multimedia codecs for XFCE?

I am having the apparently common issue of problems with video in Firefox. Youtubes play fine, but video in other web pages doesn’t work - I either get “this video cannot be played, error code 102630” or simply doesn’t respond to a click so never starts to play.
I don’t understand why this is an issue with Opensuse when with Mint and Solus, Firefox played these videos out of the box?
I see there is a one-click option to bring in the necessary codecs for KDE and Gnome, but it appears no such option for XFCE? Can I use either of the KDE or Gnome one-click installers?
I am an experienced Linux user over 10 years, but I’m a bit allergic to using terminal unless necessary, so I’d rather not have to start changing repositories and adding codecs in a terminal if there is a GUI alternative.

If there is no GUI alternative for XFCE, can someone please provide description of how to do it in terminal?
Thanks.

Install opi:
as root

zypper in opi

as root:

opi codecs

That did the trick! Not 1-touch, but easy.
thank you again, Sauerland.